The table below shows the number of survey subjects who have received and not received a speeding ticket in the last year, and the color of their cars.
Speeding Ticket No Speeding Ticket Total
Red Car 200 88 288
Not Red Car 97 80 177
Total 297 168 465

Find the probability that a randomly chosen person:

a) Has a red car.

b) Has a speeding ticket.

c) Has a speeding ticket given they have a red car.

d) Has a red car given they have a speeding ticket.

e) Has a red car and got a speeding ticket.

f) Has a red car or got a speeding ticket.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.